Table 2

Residential fire related injuries by smoke alarm (SA) status and by cause of fire, Dallas, Texas, 1991–98

Cause of fireNo of firesNo of injuriesInjuries per 100 firesNo of fires with known SA status% Fires with injuries, SA+% Fires with injuries, SA−Odds ratio (95% CI)*Injuries per 100 fires, SA+Injuries per 100 fires, SA−Rate ratio (95% CI)†
Based on analysis of 13676 residential fires in Dallas, Texas, 1991–98.
SA+, functional smoke alarm was present; SA−, functional smoke alarm was absent.
*Odds ratios and 95% confidence intervals, for proportion of injury associated fires and the presence of a functional smoke alarm.
†Rate ratios and 95% confidence intervals for number of injuries per 100 fires and the presence of a functional smoke alarm.
‡p<0.01, by Kruskal-Wallis one way analysis of variance, for fireplay v arson or all other causes.
Fireplay732496.7‡6613.8%4.0%1.06.47.10.9
(0.3 to 2.6)(0.4 to 1.9)
Arson3325571.725122.5%1.8%1.42.52.11.2
(0.5 to 3.5)(0.4 to 2.9)
All other96192953.185951.5%2.7%0.62.13.30.6
(0.4 to 0.8)(0.4 to 0.9)